Electromagnetic valve



June 26, 19280 E. E. MURRAY ELECTROMAGNETIC VALVE Filed Dec. 15, 1924 view,

Patented June 26, ldzd,

lLlNlTED dTATES A tensilrnrenr orrrce,

EARLE E.

"F3014 CQEPQMTEON,

MURRAY, DE DANVKILLE, ILLINOIS, ASSIGNOR 'E'Q THE MILLER TRAIN CON- QF STAUNTON, VIRGINIA, A CORPORATEON 0F VIRGINIA.

ELECTROMAGNETIC VALVE,

Application filed December 133, 1924. Serial Ito. 755,781.

lhis invention relates to electromagnetic valves, and more particularly to a valve 1n which the movable part or valve stem ,forms a part of, or is carried by, the movable part of an electro-magnet.

An object or the invention is the provision of a magnetic valve for, use in various systerns wherein the how of air or other Fund is controlled electrically L A further object-oil the invention is the provision or a valve or: this character oil rugged construction, which is simple and in which the number of parts is' reduced to a minimum.

lln carrying the invention into eldest, l preierably employ a magnet or the solpnord typein which the field oi the magnet terms a valve seat and in which the armature, core or plunger carries a valve member adapted to engage the seat.

In the accompanying drawings, shown one embodiment oil the invention, this showing: a i

Figure l is a central vertical sectional l have Figure 2 a iront elevation, a

Figure 3 is a horizontal sectional view on 3-3 of Figure l, and,

Figure is end elevation oil com= bined magnet, core and valve.

Referring to the drawings, the pro? rrei form oi? the device consists of elec'r magnet oi" the solenoid type, a e oo 1 formed of brass, which spool is provid with suitable heads 2, preferably termed steel, As shown, the ends of the spool are flared, as 3, to retain the heads in proper position. The magnet is provided with the usual windings l and may also be provided W with a shell 5, which serves to combine the two heads of the spool together and permits of high pressure being admitted to core, The shell further serves magnetically to complete the path and also acts as cover for the winding to prevent water or moisture from getting into the cell As shown, the shell may be secured to the heads by means of suitable fastening elements (it The magnet is provided with a core 7 an ranged within the spool in the usual manner and this core is provided with a cone shaped, reduced upper end 8, forming a valve, Between the cone and the bottom of the core, the core or stem is provided with a plural= ity out passages 9 (see Figure d). The valve 8 is adapted to comb with a valve seat 9' formed on the lower end of an externally threaded member 10. As shown, the upper end of the spool is internally threaded and is adapted to be engaged by the external threads of the valve member. Intermediate its ends, the valve member is provided with a hexagon ll (see Figure 3) for the reception of a wrench or other suitable tool to permit assembly of the valve, At one side, the hexagonal portion ll of the valve memher is provided with a groove 12 adapted to receive a portion of a set screw 13 which is received in the head 2 (see Figure l) and prevents the valve member from turning when in position.

A block it or fibre or other insulating material is arranged above the upper head and is secured thereto by suitable fastening elements in, This member is adapted to receive binding posts it, A bushing ll of insulating material extends through the upper head and is adapted to receive a lead wire 18 extending from the coil to the binding post.

A base 19 is arranged beneath the lower head and is provided with a chamber 20 surrounding the bottom or the plunger. As shown, the base is threaded for the reception of an outlet pipe 21, The base tits on the lower head on a ground joint to prevent leakage and is secured thereto by suitable fastening elements 22, A manually oper ated plunger 23 extends through the base and is adapted to contact with the core 7 outwardly, as indicated in dotted lines.

In operation, the valve is normally in the full line position shown in Figure l or the drawings and is open The magnet bein in a deenergized condition, air or other -huid passes through the bore of the member ll), then through the passages 9 in the core to the chamber 20, and thence to the discharge pipe 21, Vfhen the magnet is energized, the coreis raised tothe dotted line position shown in Figure l, causing the valve member 8 on the upper end oil the core to engage the valve seat 9. This stops the flow oi fluid.

The plunger 23 permits manual operation of the valve when desired, and further perunits the valve to be closed at intervals for testing purposes.

lln the drawings, l have shown a magnet in which one side is grounded and a single lib binding post provided. It will he apparent that a magnet having two or more terminals may be employed if desired, Without departing from the invention.

By means of the construction disclosed,

a combined valve and magnet is provided in which the valve is operated by the energizing oi the magnet.

It is to be understood that the form of my invention herewith shown and described is to be taken as a preferred example of the same, and that various changes in the shape, size, and arrangement of parts may he re sorted to Without departing from the spirit of the invention or the scope oi the solojoined claim.

ll claim: I

In an electromagnetic valve, a spool a coil arranged on said spool the upper end of said spool being threa de a member detachahly arranged in the threaded end of I said spool and having a valve seat termed on its inner end, means for securing said the bottom of said spool and provided with a chamber communicating with the interior of said spool, anda plunger projecting from said base to permit manual operation of said valve.

nnntn n. MURRAY.

In testimony whereof, afix my signatare 

